I don't know much about them so I'm speaking through our LBS here, but check out some of the Spot bikes. I was considering getting one and converting to 1x9 (I'm not ready for single-speed yet) and I found the belt-driven bikes pretty intriguing. Rode one around the parking lot at a demo day here about a month ago and I liked it. (However, I had a pretty bad wreck on my own bike the next day and I'm spending my money on the hospital bills instead of the bike).
I don't think they have dealers in DE yet but NJ & PA do.
Good luck!